Fantasie Bra Size Guide & ConverterUK-designed support with firm wings, deep cups, and J-K cup coverage.
Bridge your current size into Fantasie's UK full-bust cuts with precise notes on firm bands, narrow gores, and deep cup projection.
Fantasie size snapshot
Sizing system
UK band/cup sizing with even-numbered bands and double letters (DD, FF, GG).
Band range
30–44 across the full-support collection
Cup range
D–JJ full-coverage cups
Best for
Fantasie serves fuller busts with projected cups, firm power mesh, and hardware designed to anchor all day.
- Expect firmer bands at Fantasie; power mesh wings and tighter elastics may feel snug on the loosest hook.
- Fantasie cups are projected with deeper side panels that hug fuller-on-top or pendulous shapes.
- Fantasie designs prioritize lift with laminated fabrics, strategic seams, and wider straps for secure support.
Convert your size into Fantasie
Pick the brand and size you already wear. We pre-selected Fantasie on the right so you can see the equivalent in one click.
Convert to Fantasie
Size Guide
Enter your current bra size and select the brands you want to convert between. The converter will help you find your equivalent size in different brands.
Tips for Best Results:
- Enter your size exactly as it appears on your current bra
- Make sure to select both the source and target brands
- Different brands may have slightly different sizing standards
- Always try on bras when possible for the best fit
Fit callouts worth noting
Bands run firm out of the box
Fantasie uses sturdy wings, shorter elastics, and supportive hardware that can feel tight until broken in.
Try this:
Start with your base size plus the sister size up in the band to compare tension before removing tags.
Cups run deep with forward projection
Multi-part cups at Fantasie pull tissue forward, leaving extra room for projected or pendulous shapes.
Try this:
If you are shallow or in-between, try the sister size down in the cup or explore demi cuts with more open top lines.
Support-focused details add stability
Fantasie builds in inner slings, side boning, and reinforced straps that change how the bra lifts.
Try this:
Adjust straps slowly and ensure the inner sling sits flush; swap cup size only if tissue is wrinkling or compressing.
Try-on strategy playbook
Dial in your baseline size
- Run the ABTF calculator or your trusted measurement routine first so the converter starts from fresh numbers.
- Keep your most reliable bra size handy; the converter maps it directly into Fantasie sizing.
- Note the style you are targeting (plunge, balconette, wireless) so you can sanity-check the fit advice below.
Bracket tight bands before committing
- Order your baseline band plus the sister size up (e.g., 32F and 34E) to test firmness.
- Wear each bra on the loosest hook and inhale deeply; firm wings should stay level without pain.
- Use easy return windows to compare band tension across at least two sizes before committing.
Leverage built-in support elements
- Position inner slings and side panels smoothly before clasping.
- Adjust straps incrementally; supportive bras respond quickly to small strap changes.
- If boning digs when seated, compare with the sister size up or a softer cut.
Keep exploring
How to Measure Your Bra Size at Home
Step-by-step measuring tips before you add new pieces to your drawer.
Read moreFit Check Wizard
Troubleshoot gaping, spillover, or band riding in minutes with guided diagnostics.
Read moreSister Size Explorer
See every sister size combination when you need extra breathing room or cup depth.
Read moreKeyword prompts people use
Use or monitor these search phrases when you are researching Fantasie sizing. They surface comparison guides, calculators, and real shopper feedback.
Refresh your measurements
Accurate numbers keep your converter results honest. Grab a soft tape and follow the pro guide below before you submit that cart.
Professional Bra Measurement Guide
Essential Tools for Accurate Measurement
Required Equipment
- Soft measuring tape (preferably in inches)
- Non-padded bra or no bra
- Full-length mirror
- Notepad for recording measurements
Measurement Preparation
- Stand straight with shoulders relaxed
- Wear a non-padded bra or no bra
- Ensure the measuring tape is parallel to the floor
- Take measurements in a well-lit room
Step-by-Step Measurement Guide
Band Size Measurement
- Measure under your bust, where the bra band sits
- Keep the tape snug but not tight
- Ensure the tape is parallel to the floor
- Round to the nearest even number
Bust Size Measurement
- Measure around the fullest part of your bust
- Keep the tape parallel to the floor
- Don't pull the tape too tight
- Record the measurement in inches
Cup Size Calculation
- Subtract band size from bust measurement
- Use the difference to determine cup size
- Each inch difference represents one cup size
- Example: 1" = A, 2" = B, 3" = C, etc.
Professional Tips for Accurate Results
Common Measurement Mistakes
- Measuring over a padded bra
- Pulling the tape too tight
- Not keeping the tape parallel to the floor
- Measuring at the wrong position
Professional Recommendations
- Take measurements at least twice for accuracy
- Measure at the same time each day
- Consider professional fitting for best results
- Update measurements every 6 months
Frequently asked questions
Does Fantasie run true to size?
Expect a firm fit. Fantasie bands feel snug out of the box, so compare your base band with the next size up before settling.
What if I am between band sizes at Fantasie?
Order your measured band and the next width up with the sister cup so you can choose a snug or comfortable clasp (e.g., 34G and 36FF).
Which Fantasie styles work best for fuller busts?
For fuller busts, look at Fantasie's full-support bras with inner slings, wider straps, and either multi-part cups or posture panels.
Can I convert from other sizing systems into Fantasie?
Yes. Fantasie uses UK band numbers and double-letter cups; our converter maps US/EU sizes and notes any sister options.